Service Level Agreements and Vendor Management

During the post-bubble crash, many organizations started using vendor management programs as a cost control measure. This worked great for managing costs where the unit of measure is well defined, or there is an iron-clad service level agreement. However, the jury is very much out on whether vendor management is the right way to manage relationships with consultants, since it is unlikely that a procurement officer working in the vendor management office understands the nuanced difference between various consultants, especially where a pre-existing relationship exists between the buyer and the consultant.

What is your experience? Has vendor management added long term value to the consulting relationships you have? xiaomi mi max 64gb goldspanish english